The next time you grab a bite to eat at KFC, you might be in for a big surprise. The popular fast food restaurant wants to recharge your battery. Literally.

New limited edition packaging called the "Watt A Box" has been created as part of a marketing strategy for KFC. However, it may be some time before you actually see this technology in restaurants. The Watt A Box includes a USB port and lightning cable so that guests can charge their cellphones while they eat.

When put to the test, the Watt A Box was able to charge a cellphone 17 percent over the time period of one and a half hours, which is around the average meal time. That's nothing to get too excited about, but it could get you through in a pinch.

If you're worried about sustainability, the Watt A Box is not intended to be used and thrown away, like traditional packaging. Instead, the Watt Box is being used for marketing purposes as a part of giveaway campaign.

This isn't the first time a fast food company has tried something like this. Remember the special edition Happy Meals from McDonald's that transformed into VR headsets? If you missed that story, click here.

What do you think? Would you use the Watt A Box, or do you think it's just a silly gimmick? Let us know in the comments.